MOVD	g, R3			// arg 0: G
	// C functions expect 32 (48 for AIX) bytes of space on caller
	// stack frame and a 16-byte aligned R1
	MOVD	R1, R14			// save current stack
	SUB	$cgoCalleeStackSize, R1	// reserve the callee area
	RLDCR	$0, R1, $~15, R1	// 16-byte align
	BL	(CTR)			// may clobber R0, R3-R12
	MOVD	R14, R1			// restore stack
#ifndef GOOS_aix
	MOVD	24(R1), R2
#endif
	XOR	R0, R0			// fix R0

	MOVD	m_g0(R8), g
	BL	runtime·save_g(SB)
	MOVD	(g_sched+gobuf_sp)(g), R0
	MOVD	R0, RSP
	MOVD	(g_sched+gobuf_bp)(g), R29
	MOVD.W	$0, -16(RSP)	// create a call frame on g0 (saved LR; keep 16-aligned)
	BL	runtime·newstack(SB)

	// Not reached, but make sure the return PC from the call to newstack
	// is still in this function, and not the beginning of the next.
	UNDEF

// We allow an additional 2x buffer, as it is still fairly cheap (6mb)
const MaxRequestBodyBytes = int64(6 * 1024 * 1024)

// HTTPConfigReader is reads an HTTP request, imposing size restrictions aligned with Kubernetes limits
func HTTPConfigReader(req *http.Request) ([]byte, error) {
	defer req.Body.Close()
	lr := &io.LimitedReader{
		R: req.Body,
		N: MaxRequestBodyBytes + 1,
	}
	data, err := io.ReadAll(lr)

(Zero [32] {t} ptr mem) && t.Alignment()%8 == 0 =>
	(MOVDstore [24] ptr (MOVDconst [0])
		(MOVDstore [16] ptr (MOVDconst [0])
			(MOVDstore [8] ptr (MOVDconst [0])
				(MOVDstore ptr (MOVDconst [0]) mem))))

// Medium 8-aligned zeroing uses a Duff's device
// 8 and 128 are magic constants, see runtime/mkduff.go
(Zero [s] {t} ptr mem)
	&& s%8 == 0 && s <= 8*128
	&& t.Alignment()%8 == 0 && !config.noDuffDevice =>

		{name: "LessEqual", argLength: 1, reg: readflags},     // bool, true flags encode signed x<=y false otherwise.
		{name: "GreaterThan", argLength: 1, reg: readflags},   // bool, true flags encode signed x>y false otherwise.
		{name: "GreaterEqual", argLength: 1, reg: readflags},  // bool, true flags encode signed x>=y false otherwise.

	// instruction.
	R_RISCV_RVC_BRANCH

	// R_RISCV_RVC_JUMP resolves an 11-bit PC-relative offset for a CJ-type
	// instruction.
	R_RISCV_RVC_JUMP

	// R_PCRELDBL relocates s390x 2-byte aligned PC-relative addresses.
	// TODO(mundaym): remove once variants can be serialized - see issue 14218.
	R_PCRELDBL

	// Loong64.

	// R_LOONG64_ADDR_HI resolves to the sign-adjusted "upper" 20 bits (bit 5-24) of an

// Third, in long-term it will allow to remove cyclic runtime/race dependency on cmd/go.

// A brief recap of the ppc64le calling convention.
// Arguments are passed in R3, R4, R5 ...
// SP must be 16-byte aligned.

// Note that for ppc64x, LLVM follows the standard ABI and
// expects arguments in registers, so these functions move
// the arguments from storage to the registers expected
// by the ABI.

	case abi.Struct: // reflect.structType
		off += 4 * arch.PtrSize
	case abi.Pointer: // reflect.ptrType
		off += arch.PtrSize
	case abi.Func: // reflect.funcType
		off += arch.PtrSize // 4 bytes, pointer aligned
	case abi.Slice: // reflect.sliceType
		off += arch.PtrSize
	case abi.Array: // reflect.arrayType
		off += 3 * arch.PtrSize
	case abi.Chan: // reflect.chanType
		off += 2 * arch.PtrSize

// even on 64-bit systems.
// The same is true of socket implementations on many systems.
// See golang.org/issue/7812 and golang.org/issue/16266.
// Use 1GB instead of, say, 2GB-1, to keep subsequent reads aligned.
const maxRW = 1 << 30

// Read implements io.Reader.
func (fd *FD) Read(p []byte) (int, error) {
	if err := fd.readLock(); err != nil {
		return 0, err
	}
	defer fd.readUnlock()
	if len(p) == 0 {

  EXPECT_TRUE(first_block);
  EXPECT_EQ(out.size(), block_size);
  // Reading at offset file_size + 4 will read the second block (since the read
  // at file_size + 4 = 28 will be aligned to an offset of 16) but will return
  // OutOfRange because the offset is past the end of the 24-byte file.
  Status status = ReadCache(&cache, "", file_size + 4, 4, &out);
  EXPECT_EQ(status.code(), error::OUT_OF_RANGE);